There is too much individual variability to say how much testosterone
can be added without risk of gyno
I've seen a horrible case of gyno result in a first-time user who I know was only using 250 mg/week of Sustanon
There was once a post where a user reported gyno at only 200 mg/week.
There are very many individuals who developed gyno without taking any added testosterone at all: simply from their natural production.
And there are others who can use 1000 mg/week with no estrogen control at all and don't get gyno.
It just can't be said for an individual, other than their own experience. It's best to be careful in this regard.
What I would do is to accept that careful and intelligent use of multiple compounds is superior to limiting oneself from doing this.
For example, obtaining blood values for your current estradiol levels and finding what amount of aromatase inhibitor is right for you could allow you both to use more testosterone without concern for gyno and to have -- depending on your current situation -- quite possibly more healthful estrogen levels.
For your goals and preferences, if I understand them correctly, 500 mg/week testosterone would be an entirely suitable amount.
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